Question

I have the following XML Schema:

<Root>
   <EventSet>
      <Event>
         <id> 
            //random id 
         </id>
         <time>
            <localTime> 
               //random local time 
            </localtime>
            <utcTime> 
               //corresponding UTC time 
            </utcTime>
         </time>
      </Event>
   </EventSet>
</Root>

Given an XDocument (called xDoc in this case), I can get the root by: var root = xDoc.Root;

I tried var events = xDoc.Descendants("EventSet").Descendants("Event"); to query all events within an EventSet, but it returned null. I’m pretty sure that’s not right.

How would I query events, then iterate through to get each event’s id, localTime, and utcTime?

Answer 1

I can’t reproduce your problem. Having fixed the XML so that the tags match up, this works:

using System;
using System.Linq;
using System.Xml.Linq;

class Program
{    
    public static void Main()
    {
        var doc = XDocument.Load("Test.xml");
        var query = doc.Descendants("EventSet")
                       .Descendants("Event");
        Console.WriteLine(query.Count()); // 1
    }    
}

Or to get the bits:

foreach (var element in query)
{
    string id = (string) element.Element("id");
    string localTime = (string) element.Element("time").Element("localTime");
    string utcTime = (string) element.Element("time").Element("utcTime");
    ...
}

It’s possible that you could cast to DateTime instead of string – it depends on the format within your element.